Improvement in machines for cutting staves



A. BURNS m. r. wAss.

MACHINES FOR CUTTING STAVES.

No.17Z.96Z. 1 V. Patented Feo.1, 1876.

N. PETERS, PNOTO-LITHOGRAPHER, WASHINGTON. By C. A

UNrrED STATES PATENT OFFICE. 1

ANDREW BURNS AND JAMES F. WASS, OF WESTEIE D, NEW YORK.

IMPROVEMENT m MACHINESFOR cuTTm'c srAvEs. r

Specification forming part of Letters Patent N 0. 172,962, datedFebruary 1, 1876; application filed December 3, 1875.

i To all whom it may concera :f

Machines for Cutting Staves; and we do hercby declare that the.following is a full, clear, and exact'description of the constructionand operation of the same, reference being had to the annexed drawingsmaking a part of this specification, and to the letters and figures ofreference marked there on. a

Figure l of the drawings is a representation of my improvedstave-cutting machine. Fig. 2 is a detached view, on an enlarged scale,of one of the equalizing-knives. t

This invention has relation to stave-cutting machines; and consists inthe combination and a rangement of the several parts composing themachine with the peculiar form and construction of vertical knivesplacedat each end of the longitudinal stave-cutting blade, for the purpose ofequalizing the length of the staves during the operation, and at thesame time they are out from the block, as will be hereinafter described,and subsequently pointed out in the claim. i

In the accompanying drawings, A repre-' sents the side pieces cdinposingthe frame of a stave-cutting machine, formed with cleatsc, to which issecured a cross-piece, c, with fingers 01, said fingers projectingvupward sufliciently to act as guides for the pivoted table B, and alsoforming a rest for the front edge of the block when placedupon' thetable. The

table 13 has a series of recesses, e, in number equal to the number ofguide-fingers d, to admit of the table having a free oscillatingmovement, and be guided and steadied by the fingers. To the side piecesA, and at the top thereof, is secured-a cross-piece, c, to which isfastened the longitudinal stave-cutting knife 0. Thee'qualizing-knives DE are placed at knives, in place of the the knife E is capable ofadjustment upon the blade or "knife 0, the same provided with aline ofperforations or holes, g, for that pur- I pose, so that the. knife E maybe secured upon the knife 0 at the desired distance to the length of thestave to be out. These knives D E are of peculiar form, having theircut- 7 I ting-edge h at right angles to the cuttingedge of the knife 0,and the inner edge i-is perpendicular, while the outer edge j isinclined from .the upper or larger portion of the knife to the cuttingedge h.- The edge I; of the. knives D E strike the block at the sametime the edge of the longitudinal knife 0, the stave passing up betweenthe perpendicular sides or edges 2' of the knives D E, while-theinclined edges j press the end of the stave as it is being equalizedgradually outward, thereby .making a smooth out upon the ends of thestave without tearing or sliveri-ng it. r

If desired, instead of having the table oscillate, it may be madestationary, and the table, may be arranged to oscillate.

Having now fully described our invention,

what we claim as new, and desire to secure by Letters Patent, is-- Theguide-fingers d and table B, in combination with the longitudinal knife0, equalizing-knife D, and adjustable knife E, the equalizing-knives D Ehaving the perpendicular v substantiallyas Witnesses:

J. R. S. CROSGROVE, W. R. DOUGLAS.

